Email field
Store and validate an email-shaped string with a purpose-built admin control.
Use field.Email when a document property is an email address. It retains a string value contract
but adds server-side email-shape validation and an email control in the admin.
In the admin

The email input and server share shape validation; the stored value remains a string.
Smallest working example
field.Email("contactEmail", field.Required())The operation engine validates requests from every transport, not only values entered in the
admin. Invalid input produces a 422 validation response with an issue at contactEmail.
Options and behavior
field.Email(
"billingEmail",
field.Required(),
field.Unique(),
field.Description("Invoices and payment notices are sent here."),
)Email supports common string-field presentation, default, localization, uniqueness, and indexing
options. Use Unique when one address must identify at most one document in that collection. An
email field does not send mail, verify ownership, or make a collection authenticate users; those
are separate application and authentication concerns.
Email values can be selected, sorted, and queried with the string filter vocabulary. A localized
email is valid when each locale genuinely needs a different address; translating the label uses
LabelTranslations instead.
Common mistakes
- Syntactic validation does not confirm that an inbox exists or belongs to the actor. Use a verification workflow for that claim.
- Normalize addresses according to your product policy before relying on uniqueness. Ridu does not
invent provider-specific equivalence rules such as stripping dots or
+suffixes. - A collection with an
emailfield is not automatically an auth collection. SetAuth: trueand configure its access and account workflows.
See field.Email and Authentication.